Expression 4: "k" equals left bracket, negative "b" , ... "b" , right bracket left brace, negative 180 less than "y" less than 180 , right bracek=−b,...b−180<y<180
4
Expression 5: "b" equals floor left parenthesis, StartFraction, "L" Over "W" , EndFraction , right parenthesisb=floorLW